MRSN icon

Mersana Therapeutics
MRSN

Overview Fund Activity

42 hedge funds and large institutions have $302M invested in Mersana Therapeutics in 2017 Q3 according to their latest regulatory filings, with 24 funds opening new positions, 5 increasing their positions, 7 reducing their positions, and 11 closing their positions.

Holders
42
Holders Change
+13
Holders Change %
+44.83%
% of All Funds
1.05%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.07%
New
24
Increased
5
Reduced
7
Closed
11
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
Wellington Management Group
1
Wellington Management Group
Massachusetts
$41.3M
2
BlackRock
2
BlackRock
New York
$4.56M
3
CAM
3
Cormorant Asset Management
Massachusetts
$5.11M
4
ACH
4
ArrowMark Colorado Holdings
Colorado
$8.26M
5
Vanguard Group
5
Vanguard Group
Pennsylvania
$2.74M

Top Sellers

1
RSCM
1
Rock Springs Capital Management
Maryland
$23M
2
SCM
2
Scopia Capital Management
New York
$0
3
Alyeska Investment Group
3
Alyeska Investment Group
Illinois
$0
4
MIM
4
Monashee Investment Management
Massachusetts
$0
5
Tudor Investment Corp
5
Tudor Investment Corp
Connecticut
$346K
Name Market Value Shares Shares
Change 		Shares
Change %
NMC
1
NEA Management Company
Maryland
$141M 8,144,267 – –
Wellington Management Group
2
Wellington Management Group
Massachusetts
$41.3M 2,391,404 +344,060 +17%
Fidelity Investments
3
Fidelity Investments
Massachusetts
$30M 1,735,061 – –
RSCM
4
Rock Springs Capital Management
Maryland
$23M 1,330,000 -197,893 -13%
PAI
5
ProQuest Associates IV
Florida
$16.5M 955,709 – –
RCP
6
Rho Capital Partners
New York
$14.1M 818,033 – –
ACH
7
ArrowMark Colorado Holdings
Colorado
$8.26M 477,711 +127,711 +36%
JPMorgan Chase & Co
8
JPMorgan Chase & Co
New York
$5.86M 335,350 -5,675 -2%
CAM
9
Cormorant Asset Management
Massachusetts
$5.11M 295,549 +215,751 +270%
BlackRock
10
BlackRock
New York
$4.56M 263,783 +263,783 New
Vanguard Group
11
Vanguard Group
Pennsylvania
$2.74M 158,437 +83,437 +111%
Allianz Asset Management
12
Allianz Asset Management
Germany
$1.42M 82,099 +82,099 New
Geode Capital Management
13
Geode Capital Management
Massachusetts
$991K 57,352 +57,352 New
Millennium Management
14
Millennium Management
New York
$955K 55,256 -5,773 -9%
Victory Capital Management
15
Victory Capital Management
Texas
$903K 52,200 -1,800 -3%
LCM
16
Laurion Capital Management
New York
$865K 50,000 – –
Northern Trust
17
Northern Trust
Illinois
$661K 38,221 +38,221 New
DekaBank Deutsche Girozentrale
18
DekaBank Deutsche Girozentrale
Germany
$461K 30,000 -20,000 -40%
PPA
19
Parametric Portfolio Associates
Washington
$407K 23,516 +23,516 New
State Street
20
State Street
Massachusetts
$402K 23,231 +23,231 New
Tudor Investment Corp
21
Tudor Investment Corp
Connecticut
$346K 20,000 -50,783 -72%
Norges Bank
22
Norges Bank
Norway
$346K 20,000 – –
Citigroup
23
Citigroup
New York
$325K 18,812 +18,812 New
SIM
24
Spark Investment Management
New York
$323K 18,688 +18,688 New
Morgan Stanley
25
Morgan Stanley
New York
$271K 15,665 +15,665 New
1
2 3